GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Wiper/Washer System Check performed?

--

Go to Step 2

Go to Wiper/Washer System Check

2

Check for an open wiper fuse.

Is the fuse open?

--

Go to Step 3

Go to Step 4

3

Replace the wiper fuse.

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

4

  1. Set ignition switch to RUN.
  2. Backprobe from the wiper/washer switch connector C201, terminal E5, to ground with a test light .

Is the test light on?

--

Go to Step 6

Go to Step 5

5

Repair the poor connection or open in CKT 243 to the wiper/washer switch.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

6

  1. Set the wiper switch to HI.
  2. Connect the test light from connector C201, terminal E1, to ground.

Is the test light on?

--

Go to Step 9

Go to Step 7

7

Check for a poor connection at connector C201, terminal E1. Also, check for an open in the pigtail (CKT 243) to the wiper/washer switch.

Is a poor connection or an open present?

--

Go to Step 8

Go to Step 16

8

Repair the poor connection or the open in the pigtail (CKT 243).

Is the repair complete?

--

Go to Wiper/Washer System Check

--

9

  1. Disconnect the wiper motor connector.
  2. Connect the test light from the wiper motor connector, terminal C, to ground.

Is the test light on?

--

Go to Step 11

Go to Step 10

10

Repair the poor connection or the open in CKT 92 between connector C201 and the wiper motor .

Is the repair complete?

--

Go to Wiper/Washer System Check

--

11

Connect the test light from the wiper motor connector, terminal C to terminal A.

Is the test light on?

--

Go to Step 13

Go to Step 12

12

Repair the poor connection or open in ground CKT 1650.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

13

Check for a poor connection to the wiper motor.

Is a poor connection present?

--

Go to Step 15

Go to Step 14

14

Replace the wiper motor . Refer to Windshield Wiper Motor Replacement .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--

15

Repair the poor connection.

Is the repair complete?

--

Go to Wiper/Washer System Check

--

16

Replace the wiper/washer switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle .

Is the replacement complete?

--

Go to Wiper/Washer System Check

--